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Thiel, David V.. (2014). RESEARCH METHODS FOR ENGINEERS . United Kingdom: Cambridge University Press.

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Thiel, David V.. RESEARCH METHODS FOR ENGINEERS. United Kingdom: Cambridge University Press, 2014. Text.

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Thiel, David V.. RESEARCH METHODS FOR ENGINEERS. United Kingdom: Cambridge University Press, 2014. Text.

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Thiel, David V.. RESEARCH METHODS FOR ENGINEERS. United Kingdom: Cambridge University Press, 2014. Print.